simple past tense and past participle of cross-multiply

plural of cross-multiplication (denoting countable instances of the uncountable concept).

present participle of cross-multiply

(mathematics) An instance, or the process, of cross-multiplying.

To set the product of the extremes of a proportion equal to the product of its means.

a valuable but elusive treasure

A burning cross made of wood, historically used to rally troops.

plural of cross-staff

plural of cross-jack yard

Alternative form of cross-purpose